Tube-coiling apparatus.



W. DIEBEL.

TUBE BOILING APPARATUS.

APPLICATION FILED JAN. 17. 1914.

' 1,124,874. Patented Jan. 12,1915.

2 SHEETS-SHEET 1.

THE NORRIS PETERS 60., FHOTO-LITHOH WA'SHINIJ TON. D. C.

W. DIEBEL.

TUBE GOILING- APPARATUS. Arruomilou FILED 11.11, 191 1.

1,124,874. Patented Jan. 12, 1915.

2 SHEETS-SHEET 2.

Elmo/Mom M'Zliam Diebel THE NORRIS PETERS CO" PHOTO-LITHO, WASHINGTDN 11 C.

marrnn s ra'rus PATENT orricn.

WILLIAM Dinner, on PHILADELPHIA, PENNSYLVANIA.

TUBE-COILING APPARATUS.

and State of Pennsylvania, have invented certain new and useful Improvements in Tube-Coiling Apparatus, of which thefollowing is a specification. I

My invention relatesto improvements in tube coiling apparatus, the object of the invention being to provide an improved apparatus which will rapidly coil tubing of very thin metal without the necessity of filling the tube with sand, rosin, lead, or other material to prevent collapsing.

While, of course, my invention is not limited to any particular'thickness of metal,

my apparatus enables me to coil tubing which would with ordinary apparatus become flattened out like a ribbon ii": any attempt were made to coil the same, and as this very thin metal tubing greatly facilitates the interchange of temperatures, it can be used with great success in water heaters for many uses.

Vv ltl'l these and other objects in view, the

- invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure l is a View in elevation illustrating one form of my improvements. Fig. 2 is a fragmentary view in longitudinal section. Fig. 3 is an end elevation of the tube guiding head and its handle. Figs. 4, 5, and 6 are views similar to Figs. 1, 2, and 3, illustrating a modification, and Fig. 7 is a view in cross section on the line 77 of Fig. 6.

1 represents a mandrel provided with a spiral groove 2, and at one end made angular as shown at 3 for attachment to the chuck of any ordinary lathe or other appa-' ratus for turning the mandrel.

l represents a metal tube which is adapted to be coiled around the mandrel 1 in the.

in the groove, it can be readily removed and not bind in the groove as would be the Specification of Letters Patent.

case if the diameter of the tube and groove Patented Jan. 12, 1915.

Application filed January 17, 1914. Serial No.-812,673. I i

were of substantially the same dimensions. I 1th my improved apparatus, it is.

neither necessary nor desirable that the tube be heated, but while cold is guided into place around the mandrel by means'of an improved head 5 which is of general cylin' drical form and ofan internal diameter slightly larger than the diameter of the mandrel. This head 5 comprises a sleeve 5 provided at one end with a ring 6, and the meeting surfaces of the ring 6 and sleeve 5? are at anangle to the longitudinal axis of the head and the mandrel, so that a plate-7 located between the ring and the sleeve is located at the same angle as thepitch of I the groove 2 of the mandrel, and in bending the tube around the groove, this plate 7 acts as one wall of the groove.

The plate 7 is secured screws 8 to the head, and has an opening 9 appreciably smaller than the internal diameter. of the head, so that the plate projects into the groove a sufficient distance to act as a wall of the groove in bending the tube as clearly shown in Fig. 2. I 3

A handle 10 is secured to the'head, and a recess 11 is provided in thering 6 to afford an entrance for the tube 4.. The inner corner of one wall of this recess is rounded as shown at 12 to prevent cutting or sharply bending the tube. I i T The mandrel l is provided with an opening 13 adjacent its outer end in the groove 2, and in operation the endof tube 4:, after being projected through the entrance 11 in the ring 6, is projected into this opening 13 so that the revolution of the mandrel causes the tube to be bent around the mandrel and follow in the groove.

The handle l0 is held while the mandrel is revolved, and the tube 4 feeds through the entrance l1 and around the groove 2.

This causes the head 5 to move longitudi nally of the mandrel, and as above stated, the plate 1 is positioned in the grooveand acts as one wall of the groove while the tube is bent therein, so that each convolution of the tube is allowed a movement in the groove, and there is a loose. connection between the tube and the mandrel which 3 14: having an opening or recess 15 at one end to receive one end of the tube 4. With this smooth mandrel, I employ an internally and spirally grooved head 16 which is made up of a plurality of rings secured together by screws 17.

The tube l enters the head at the point 18, and is guided around inside the head by the spiral groove 19, so that the revolution of the mandrel winds the tube aroundthe same as it is guided thereupon in a spiral coil by means of the internally spiral grooved head.

The groove 19 in the head is of a depth sutlicient to prevent a collapsing or mashing of the tube, and as in the other form of my invention above described, the head feeds longitudinally along the mandrel as the tube is spirally wound thereon. It is therefore necessary to provide a handle 20 to hold the head, and this handle is grasped and held against rotary movement during the coiling operation.

It will be noted particularly by reference to Figs. 1, l, and 5, that the tube 4 is fed into the head and moves longitudinally of the handle. This permits the tube to be readily guided to the head, and in fact, the hand may readily grip the tube and the handle as shown clearly in Fig. 1.

- After the tube is completely coiled, the end which is located in the opening in the mandrel can be cut off and the tube readily removed from the mandrel.

Various other slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall Within the spirit and scope of the-appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A tube coiling apparatus comprising a spirally grooved mandrel having means at one end for connection with the tube, a head fitting the mandrel and adapted to guide a tube into the groove, said groove of a greater width and of approximately the same depth as the diameter of the tube to be coiled therein, and a plate carried by the head and movable in the groove, said plate constituting a movable wall of the groove in which the convolution of the coil is being bent, substantially as described.

2. In a tube coiling apparatus, the combination with a spirally grooved mandrel, a head having a cylindrical bore fitting the mandrel, said head having an opening through which a tube is adapted to pass and be guided by the head into the groove on the mandrel, said groove in the mandrel of a dimension to accommodate the entire diameter of the tube and having an opening in one end into which one end of the tube is adapted to be projected to hold the tube against turning movement 011 the mandrel, substantially as described.

In testimony whereof I have signed my name tothis specification in the presence of two subscribing witneses.

WILLIAM DIEBEL.

Witnesses M. E. DITTUS, GHAs. E. POTTS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

